Google has finally unveiled their copyright protection system for YouTube. The reactions have been mixed. While the system appears to be effective, it requires copyright holders to provide Google with full copies of any video they want policed.
The automated YouTube video ID system looks at all video as it is uploaded and tries to match it with a database of visual abstractions of the copyrighted material that has been provided by content owners. If the system finds a match it will either block it, post it, or–depending upon the policy specified by the content owner–put ads on it, with the revenue being shared with the content owner.